typo3/sysext/extbase/Classes/Persistence/Storage/Typo3DbBackend.php

   1 <?php
   2 /***************************************************************
   3 *  Copyright notice
   4 *
   5 *  (c) 2009 Jochen Rau <jochen.rau@typoplanet.de>
   6 *  All rights reserved
   7 *
   8 *  This class is a backport of the corresponding class of FLOW3.
   9 *  All credits go to the v5 team.
  10 *
  11 *  This script is part of the TYPO3 project. The TYPO3 project is
  12 *  free software; you can redistribute it and/or modify
  13 *  it under the terms of the GNU General Public License as published by
  14 *  the Free Software Foundation; either version 2 of the License, or
  15 *  (at your option) any later version.
  16 *
  17 *  The GNU General Public License can be found at
  18 *  http://www.gnu.org/copyleft/gpl.html.
  19 *
  20 *  This script is distributed in the hope that it will be useful,
  21 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 *  GNU General Public License for more details.
  24 *
  25 *  This copyright notice MUST APPEAR in all copies of the script!
  26 ***************************************************************/
  27
  28 /**
  29  * A Storage backend
  30  *
  31  * @package Extbase
  32  * @subpackage Persistence
  33  * @version $Id: $
  34  */
  35 class Tx_Extbase_Persistence_Storage_Typo3DbBackend implements Tx_Extbase_Persistence_Storage_BackendInterface, t3lib_Singleton {
  36
  37         const OPERATOR_EQUAL_TO_NULL = 'operatorEqualToNull';
  38         const OPERATOR_NOT_EQUAL_TO_NULL = 'operatorNotEqualToNull';
  39
  40         /**
  41          * The TYPO3 database object
  42          *
  43          * @var t3lib_db
  44          */
  45         protected $databaseHandle;
  46
  47         /**
  48          * The TYPO3 page select object. Used for language and workspace overlay
  49          *
  50          * @var t3lib_pageSelect
  51          */
  52         protected $pageSelectObject;
  53
  54         /**
  55          * TRUE if automatic cache clearing in TCEMAIN should be done on insert/update/delete, FALSE otherwise.
  56          *
  57          * @var boolean
  58          */
  59         protected $automaticCacheClearing = FALSE;
  60
  61         /**
  62          * Constructs this Storage Backend instance
  63          *
  64          * @param t3lib_db $databaseHandle The database handle
  65          */
  66         public function __construct($databaseHandle) {
  67                 $this->databaseHandle = $databaseHandle;
  68         }
  69
  70         /**
  71          * Set the automatic cache clearing flag.
  72          * If TRUE, then inserted/updated/deleted records trigger a TCEMAIN cache clearing.
  73          *
  74          * @param $automaticCacheClearing boolean if TRUE, enables automatic cache clearing
  75          * @return void
  76          * @internal
  77          */
  78         public function setAutomaticCacheClearing($automaticCacheClearing) {
  79                 $this->automaticCacheClearing = (boolean)$automaticCacheClearing;
  80         }
  81
  82         /**
  83          * Adds a row to the storage
  84          *
  85          * @param string $tableName The database table name
  86          * @param array $row The row to be inserted
  87          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
  88          * @return int The uid of the inserted row
  89          */
  90         public function addRow($tableName, array $row, $isRelation = FALSE) {
  91                 $fields = array();
  92                 $values = array();
  93                 $parameters = array();
  94                 unset($row['uid']); // TODO Check if the offset exists
  95                 foreach ($row as $columnName => $value) {
  96                         $fields[] = $columnName;
  97                         $values[] = '?';
  98                         $parameters[] = $value;
  99                 }
 100
 101                 $sqlString = 'INSERT INTO ' . $tableName . ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';
 102                 $this->replacePlaceholders($sqlString, $parameters);
 103                 $this->databaseHandle->sql_query($sqlString);
 104                 $this->checkSqlErrors();
 105                 $uid = $this->databaseHandle->sql_insert_id();
 106                 if (!$isRelation) {
 107                         $this->clearPageCache($tableName, $uid);
 108                 }
 109                 return $uid;
 110         }
 111
 112         /**
 113          * Updates a row in the storage
 114          *
 115          * @param string $tableName The database table name
 116          * @param array $row The row to be updated
 117          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
 118          * @return void
 119          */
 120         public function updateRow($tableName, array $row, $isRelation = FALSE) {
 121                 if (!isset($row['uid'])) throw new InvalidArgumentException('The given row must contain a value for "uid".');
 122                 $uid = (int)$row['uid'];
 123                 unset($row['uid']);
 124                 $fields = array();
 125                 $parameters = array();
 126                 foreach ($row as $columnName => $value) {
 127                         $fields[] = $columnName . '=?';
 128                         $parameters[] = $value;
 129                 }
 130                 $parameters[] = $uid;
 131
 132                 $sqlString = 'UPDATE ' . $tableName . ' SET ' . implode(', ', $fields) . ' WHERE uid=?';
 133                 $this->replacePlaceholders($sqlString, $parameters);
 134
 135                 $returnValue = $this->databaseHandle->sql_query($sqlString);
 136                 $this->checkSqlErrors();
 137                 if (!$isRelation) {
 138                         $this->clearPageCache($tableName, $uid);
 139                 }
 140                 return $returnValue;
 141         }
 142
 143         /**
 144          * Deletes a row in the storage
 145          *
 146          * @param string $tableName The database table name
 147          * @param array $uid The uid of the row to be deleted
 148          * @param boolean $isRelation TRUE if we are currently inserting into a relation table, FALSE by default
 149          * @return void
 150          */
 151         public function removeRow($tableName, $uid, $isRelation = FALSE) {
 152                 $sqlString = 'DELETE FROM ' . $tableName . ' WHERE uid=?';
 153                 $this->replacePlaceholders($sqlString, array((int)$uid));
 154                 if (!$isRelation) {
 155                         $this->clearPageCache($tableName, $uid, $isRelation);
 156                 }
 157                 $returnValue = $this->databaseHandle->sql_query($sqlString);
 158                 $this->checkSqlErrors();
 159                 return $returnValue;
 160         }
 161
 162         /**
 163          * Returns an array with tuples matching the query.
 164          *
 165          * @param Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query
 166          * @return array The matching tuples
 167          */
 168         public function getRows(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query) {
 169                 $sql = array();
 170                 $sql['tables'] = array();
 171                 $sql['fields'] = array();
 172                 $sql['where'] = array();
 173                 $sql['enableFields'] = array();
 174                 $sql['orderings'] = array();
 175                 $sql['limit'] = array();
 176                 $parameters = array();
 177                 $tuples = array();
 178
 179                 $this->parseSource($query, $sql, $parameters);
 180                 $sqlString = 'SELECT ' . implode(',', $sql['fields']) . ' FROM ' . implode(' ', $sql['tables']);
 181
 182                 $this->parseConstraint($query->getConstraint(), $sql, $parameters, $query->getBoundVariableValues());
 183
 184                 if (!empty($sql['where'])) {
 185                         $sqlString .= ' WHERE ' . implode('', $sql['where']);
 186                         if (!empty($sql['enableFields'])) {
 187                                 $sqlString .= ' AND ' . implode(' AND ', $sql['enableFields']);
 188                         }
 189                 } elseif (!empty($sql['enableFields'])) {
 190                         $sqlString .= ' WHERE ' . implode(' AND ', $sql['enableFields']);
 191                 }
 192
 193                 $this->parseOrderings($query->getOrderings(), $sql, $parameters, $query->getBoundVariableValues());
 194                 if (!empty($sql['orderings'])) {
 195                         $sqlString .= ' ORDER BY ' . implode(', ', $sql['orderings']);
 196                 }
 197
 198                 $this->parseLimitAndOffset($query->getLimit(), $query->getOffset(), $sql, $parameters, $query->getBoundVariableValues());
 199                 if (!empty($sql['limit'])) {
 200                         $sqlString .= ' LIMIT ' . $sql['limit'];
 201                 }
 202
 203                 $this->replacePlaceholders($sqlString, $parameters);
 204
 205                 $result = $this->databaseHandle->sql_query($sqlString);
 206                 $this->checkSqlErrors();
 207                 if ($result) {
 208                         $tuples = $this->getRowsFromResult($query->getSource(), $result);
 209                 }
 210
 211                 return $tuples;
 212         }
 213
 214         /**
 215          * Checks if a Value Object equal to the given Object exists in the data base
 216          *
 217          * @param array $properties The properties of the Value Object
 218          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap The Data Map
 219          * @return array The matching tuples
 220          */
 221         public function hasValueObject(array $properties, Tx_Extbase_Persistence_Mapper_DataMap $dataMap) {
 222                 $fields = array();
 223                 $parameters = array();
 224                 foreach ($properties as $propertyName => $propertyValue) {
 225                         if ($dataMap->isPersistableProperty($propertyName) && ($propertyName !== 'uid')) {
 226                                 $fields[] = $dataMap->getColumnMap($propertyName)->getColumnName() . '=?';
 227                                 $parameters[] = $dataMap->convertPropertyValueToFieldValue($propertyValue);
 228                         }
 229                 }
 230
 231                 $sqlString = 'SELECT * FROM ' . $dataMap->getTableName() .  ' WHERE ' . implode(' AND ', $fields);
 232                 $this->replacePlaceholders($sqlString, $parameters);
 233                 $res = $this->databaseHandle->sql_query($sqlString);
 234                 $this->checkSqlErrors();
 235                 $row = $this->databaseHandle->sql_fetch_assoc($res);
 236                 if ($row !== FALSE) {
 237                         return $row['uid'];
 238                 } else {
 239                         return FALSE;
 240                 }
 241         }
 242
 243         /**
 244          * Transforms a Query Source into SQL and parameter arrays
 245          *
 246          * @param Tx_Extbase_Persistence_QOM_QueryObjectModel $query
 247          * @param array &$sql
 248          * @param array &$parameters
 249          * @return void
 250          */
 251         protected function parseSource(Tx_Extbase_Persistence_QOM_QueryObjectModelInterface $query, array &$sql, array &$parameters) {
 252                 $source = $query->getSource();
 253                 if ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 254                         $selectorName = $source->getSelectorName();
 255                         $sql['fields'][] = $selectorName . '.*';
 256                         $sql['tables'][] = $selectorName;
 257                         $extbaseSettings = Tx_Extbase_Dispatcher::getSettings();
 258                         if ($query->getBackendSpecificQuerySettings()->enableFieldsEnabled()) {
 259                                 $this->addEnableFieldsStatement($selectorName, $sql);
 260                         }
 261                         if ($query->getBackendSpecificQuerySettings()->storagePageEnabled()) {
 262                                 $sql['enableFields'][] = $selectorName . '.pid=' . intval($extbaseSettings['storagePid']);
 263                         }
 264                 } elseif ($source instanceof Tx_Extbase_Persistence_QOM_JoinInterface) {
 265                         $this->parseJoin($source, $sql, $parameters);
 266                 }
 267         }
 268
 269         /**
 270          * Transforms a Join into SQL and parameter arrays
 271          *
 272          * @param Tx_Extbase_Persistence_QOM_JoinInterface $join
 273          * @param array &$sql
 274          * @param array &$parameters
 275          * @return void
 276          */
 277         protected function parseJoin(Tx_Extbase_Persistence_QOM_JoinInterface $join, array &$sql, array &$parameters) {
 278                 $leftSelectorName = $join->getLeft()->getSelectorName();
 279                 $rightSelectorName = $join->getRight()->getSelectorName();
 280
 281                 $sql['fields'][] = $leftSelectorName . '.*';
 282                 $sql['fields'][] = $rightSelectorName . '.*';
 283
 284                 // TODO Implement support for different join types and nested joins
 285                 $sql['tables'][] = $leftSelectorName . ' LEFT JOIN ' . $rightSelectorName;
 286
 287                 $joinCondition = $join->getJoinCondition();
 288                 // TODO Check the parsing of the join
 289                 if ($joinCondition instanceof Tx_Extbase_Persistence_QOM_EquiJoinCondition) {
 290                         $sql['tables'][] = 'ON ' . $joinCondition->getSelector1Name() . '.' . $joinCondition->getProperty1Name() . ' = ' . $joinCondition->getSelector2Name() . '.' . $joinCondition->getProperty2Name();
 291                 }
 292                 // TODO Implement childtableWhere
 293
 294                 $this->addEnableFieldsStatement($leftSelectorName, $sql);
 295                 $this->addEnableFieldsStatement($rightSelectorName, $sql);
 296         }
 297
 298         /**
 299          * Transforms a constraint into SQL and parameter arrays
 300          *
 301          * @param Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint
 302          * @param array &$sql
 303          * @param array &$parameters
 304          * @param array $boundVariableValues
 305          * @return void
 306          */
 307         protected function parseConstraint(Tx_Extbase_Persistence_QOM_ConstraintInterface $constraint = NULL, array &$sql, array &$parameters, array $boundVariableValues) {
 308                 if ($constraint instanceof Tx_Extbase_Persistence_QOM_AndInterface) {
 309                         $sql['where'][] = '(';
 310                         $this->parseConstraint($constraint->getConstraint1(), $sql, $parameters, $boundVariableValues);
 311                         $sql['where'][] = ' AND ';
 312                         $this->parseConstraint($constraint->getConstraint2(), $sql, $parameters, $boundVariableValues);
 313                         $sql['where'][] = ')';
 314                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_OrInterface) {
 315                         $sql['where'][] = '(';
 316                         $this->parseConstraint($constraint->getConstraint1(), $sql, $parameters, $boundVariableValues);
 317                         $sql['where'][] = ' OR ';
 318                         $this->parseConstraint($constraint->getConstraint2(), $sql, $parameters, $boundVariableValues);
 319                         $sql['where'][] = ')';
 320                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_NotInterface) {
 321                         $sql['where'][] = 'NOT (';
 322                         $this->parseConstraint($constraint->getConstraint(), $sql, $parameters, $boundVariableValues);
 323                         $sql['where'][] = ')';
 324                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_ComparisonInterface) {
 325                         $this->parseComparison($constraint, $sql, $parameters, $boundVariableValues);
 326                 } elseif ($constraint instanceof Tx_Extbase_Persistence_QOM_RelatedInterface) {
 327                         $this->parseRelated($constraint, $sql, $parameters, $boundVariableValues);
 328                 }
 329         }
 330
 331         /**
 332          * Parse a Comparison into SQL and parameter arrays.
 333          *
 334          * @param Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison The comparison to parse
 335          * @param array &$sql SQL query parts to add to
 336          * @param array &$parameters Parameters to bind to the SQL
 337          * @param array $boundVariableValues The bound variables in the query and their values
 338          * @return void
 339          */
 340         protected function parseComparison(Tx_Extbase_Persistence_QOM_ComparisonInterface $comparison, array &$sql, array &$parameters, array $boundVariableValues) {
 341                 if (!($comparison->getOperand2() instanceof Tx_Extbase_Persistence_QOM_BindVariableValueInterface)) throw new Tx_Extbase_Persistence_Exception('Type of operand is not supported', 1247581135);
 342
 343                 $value = $boundVariableValues[$comparison->getOperand2()->getBindVariableName()];
 344                 $operator = $comparison->getOperator();
 345                 if ($value === NULL) {
 346                         if ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_EQUAL_TO) {
 347                                 $operator = self::OPERATOR_EQUAL_TO_NULL;
 348                         } elseif ($operator === Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_NOT_EQUAL_TO) {
 349                                 $operator = self::OPERATOR_NOT_EQUAL_TO_NULL;
 350                         } else {
 351                                 // TODO Throw exception
 352                         }
 353                 }
 354                 $parameters[] = $value;
 355
 356                 $this->parseDynamicOperand($comparison->getOperand1(), $operator, $sql, $parameters);
 357         }
 358
 359         /**
 360          * Parse a DynamicOperand into SQL and parameter arrays.
 361          *
 362          * @param Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand
 363          * @param string $operator One of the JCR_OPERATOR_* constants
 364          * @param array $boundVariableValues
 365          * @param array &$parameters
 366          * @param string $valueFunction an aoptional SQL function to apply to the operand value
 367          * @return void
 368          */
 369         protected function parseDynamicOperand(Tx_Extbase_Persistence_QOM_DynamicOperandInterface $operand, $operator, array &$sql, array &$parameters, $valueFunction = NULL) {
 370                 if ($operand instanceof Tx_Extbase_Persistence_QOM_LowerCaseInterface) {
 371                         $this->parseDynamicOperand($operand->getOperand(), $operator, $sql, $parameters, 'LOWER');
 372                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_UpperCaseInterface) {
 373                         $this->parseDynamicOperand($operand->getOperand(), $operator, $sql, $parameters, 'UPPER');
 374                 } elseif ($operand instanceof Tx_Extbase_Persistence_QOM_PropertyValueInterface) {
 375                         $selectorName = $operand->getSelectorName();
 376                         $operator = $this->resolveOperator($operator);
 377
 378                         if ($valueFunction === NULL) {
 379                                 $constraintSQL .= (!empty($selectorName) ? $selectorName . '.' : '') . $operand->getPropertyName() .  ' ' . $operator . ' ?';
 380                         } else {
 381                                 $constraintSQL .= $valueFunction . '(' . (!empty($selectorName) ? $selectorName . '.' : '') . $operand->getPropertyName() .  ' ' . $operator . ' ?';
 382                         }
 383
 384                         $sql['where'][] = $constraintSQL;
 385                 }
 386         }
 387
 388         /**
 389          * Returns the SQL operator for the given JCR operator type.
 390          *
 391          * @param string $operator One of the JCR_OPERATOR_* constants
 392          * @return string an SQL operator
 393          */
 394         protected function resolveOperator($operator) {
 395                 switch ($operator) {
 396                         case self::OPERATOR_EQUAL_TO_NULL:
 397                                 $operator = 'IS';
 398                                 break;
 399                         case self::OPERATOR_NOT_EQUAL_TO_NULL:
 400                                 $operator = 'IS NOT';
 401                                 break;
 402                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_EQUAL_TO:
 403                                 $operator = '=';
 404                                 break;
 405                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_NOT_EQUAL_TO:
 406                                 $operator = '!=';
 407                                 break;
 408                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LESS_THAN:
 409                                 $operator = '<';
 410                                 break;
 411                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LESS_THAN_OR_EQUAL_TO:
 412                                 $operator = '<=';
 413                                 break;
 414                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_GREATER_THAN:
 415                                 $operator = '>';
 416                                 break;
 417                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_GREATER_THAN_OR_EQUAL_TO:
 418                                 $operator = '>=';
 419                                 break;
 420                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_OPERATOR_LIKE:
 421                                 $operator = 'LIKE';
 422                                 break;
 423                         default:
 424                                 throw new Tx_Extbase_Persistence_Exception('Unsupported operator encountered.', 1242816073);
 425                 }
 426
 427                 return $operator;
 428         }
 429
 430         /**
 431          * Replace query placeholders in a query part by the given
 432          * parameters.
 433          *
 434          * @param string $queryPart The query part with placeholders
 435          * @param array $parameters The parameters
 436          * @return string The query part with replaced placeholders
 437          */
 438         protected function replacePlaceholders(&$sqlString, array $parameters) {
 439                 if (substr_count($sqlString, '?') !== count($parameters)) throw new Tx_Extbase_Persistence_Exception('The number of question marks to replace must be equal to the number of parameters.', 1242816074);
 440                 $offset = 0;
 441                 foreach ($parameters as $parameter) {
 442                         $markPosition = strpos($sqlString, '?', $offset);
 443                         if ($markPosition !== FALSE) {
 444                                 if ($parameter === NULL) {
 445                                         $parameter = 'NULL';
 446                                 } else {
 447                                         $parameter = "'" . $parameter . "'"; // TODO Discuss: Do we need quotation?
 448                                 }
 449                                 $sqlString = substr($sqlString, 0, $markPosition) . $parameter . substr($sqlString, $markPosition + 1);
 450                         }
 451                         $offset = $markPosition + strlen($parameter);
 452                 }
 453         }
 454
 455         /**
 456          * Builds the enable fields statement
 457          *
 458          * @param string $selectorName The selector name (= database table name)
 459          * @param array &$sql The query parts
 460          * @return void
 461          */
 462         protected function addEnableFieldsStatement($selectorName, array &$sql) {
 463                 // TODO We have to call the appropriate API method if we are in TYPO3BE mode
 464                 if (is_array($GLOBALS['TCA'][$selectorName]['ctrl'])) {
 465                         $statement = substr($GLOBALS['TSFE']->sys_page->enableFields($selectorName), 5);
 466                         if(!empty($statement)) {
 467                                 $sql['enableFields'][] = $statement;
 468                         }
 469                 }
 470         }
 471
 472         /**
 473          * Transforms orderings into SQL
 474          *
 475          * @param array $orderings
 476          * @param array &$sql
 477          * @param array &$parameters
 478          * @param array $boundVariableValues
 479          * @return void
 480          */
 481         protected function parseOrderings(array $orderings, array &$sql, array &$parameters, array $boundVariableValues) {
 482                 foreach ($orderings as $ordering) {
 483                         $operand = $ordering->getOperand();
 484                         $order = $ordering->getOrder();
 485                         if ($operand instanceof Tx_Extbase_Persistence_QOM_PropertyValue) {
 486                                 switch ($order) {
 487                                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_ORDER_ASCENDING:
 488                                                 $order = 'ASC';
 489                                                 break;
 490                                         case Tx_Extbase_Persistence_QOM_QueryObjectModelConstantsInterface::JCR_ORDER_DESCENDING:
 491                                                 $order = 'DESC';
 492                                                 break;
 493                                         default:
 494                                                 throw new Tx_Extbase_Persistence_Exception('Unsupported order encountered.', 1242816074);
 495                                 }
 496
 497                                 $sql['orderings'][] = $ordering->getOperand()->getPropertyName() . ' ' . $order;
 498                         }
 499                 }
 500         }
 501
 502         /**
 503          * Transforms limit and offset into SQL
 504          *
 505          * @param int $limit
 506          * @param int $offset
 507          * @param array &$sql
 508          * @return void
 509          */
 510         protected function parseLimitAndOffset($limit, $offset, array &$sql) {
 511                 if ($limit !== NULL && $offset !== NULL) {
 512                         $sql['limit'] = $offset . ', ' . $limit;
 513                 } elseif ($limit !== NULL) {
 514                         $sql['limit'] = $limit;
 515                 }
 516         }
 517
 518         /**
 519          * Transforms a Resource from a database query to an array of rows. Performs the language and
 520          * workspace overlay before.
 521          *
 522          * @param Tx_Extbase_Persistence_QOM_SourceInterface $source The source (selector od join)
 523          *
 524          * @return array The result as an array of rows (tuples)
 525          */
 526         protected function getRowsFromResult(Tx_Extbase_Persistence_QOM_SourceInterface $source, $res) {
 527                 $rows = array();
 528                 while ($row = $this->databaseHandle->sql_fetch_assoc($res)) {
 529                         if      ($source instanceof Tx_Extbase_Persistence_QOM_SelectorInterface) {
 530                         $row = $this->doLanguageAndWorkspaceOverlay($source->getSelectorName(), $row);
 531                         }
 532                         if (is_array($row)) {
 533                                 // TODO Check if this is necessary, maybe the last line is enough
 534                                 $arrayKeys = range(0,count($row));
 535                                 array_fill_keys($arrayKeys, $row);
 536                                 $rows[] = $row;
 537                         }
 538                 }
 539                 return $rows;
 540         }
 541
 542         /**
 543          * Performs workspace and language overlay on the given row array. The language and workspace id is automatically
 544          * detected (depending on FE or BE context). You can also explicitly set the language/workspace id.
 545          *
 546          * @param Tx_Extbase_Persistence_Mapper_DataMap $dataMap
 547          * @param array $row The row array (as reference)
 548          * @param string $languageUid The language id
 549          * @param string $workspaceUidUid The workspace id
 550          * @return void
 551          */
 552         protected function doLanguageAndWorkspaceOverlay($tableName, array $row, $languageUid = NULL, $workspaceUid = NULL) {
 553                 if (!($this->pageSelectObject instanceof t3lib_pageSelect)) {
 554                         if (TYPO3_MODE == 'FE') {
 555                                 if (is_object($GLOBALS['TSFE'])) {
 556                                         $this->pageSelectObject = $GLOBALS['TSFE']->sys_page;
 557                                         if ($languageUid === NULL) {
 558                                                 $languageUid = $GLOBALS['TSFE']->sys_language_content;
 559                                         }
 560                                 } else {
 561                                         require_once(PATH_t3lib . 'class.t3lib_page.php');
 562                                         $this->pageSelectObject = t3lib_div::makeInstance('t3lib_pageSelect');
 563                                         if ($languageUid === NULL) {
 564                                                 $languageUid = intval(t3lib_div::_GP('L'));
 565                                         }
 566                                 }
 567                                 if ($workspaceUid !== NULL) {
 568                                         $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 569                                 }
 570                         } else {
 571                                 require_once(PATH_t3lib . 'class.t3lib_page.php');
 572                                 $this->pageSelectObject = t3lib_div::makeInstance( 't3lib_pageSelect' );
 573                                 //$this->pageSelectObject->versioningPreview =  TRUE;
 574                                 if ($workspaceUid === NULL) {
 575                                         $workspaceUid = $GLOBALS['BE_USER']->workspace;
 576                                 }
 577                                 $this->pageSelectObject->versioningWorkspaceId = $workspaceUid;
 578                         }
 579                 }
 580
 581                 $this->pageSelectObject->versionOL($tableName, $row, TRUE);
 582                 $row = $this->pageSelectObject->getRecordOverlay($tableName, $row, $languageUid, ''); //'hideNonTranslated'
 583                 // TODO Skip if empty languageoverlay (languagevisibility)
 584                 return $row;
 585         }
 586
 587         /**
 588          * Checks if there are SQL errors in the last query, and if yes, throw an exception.
 589          *
 590          * @return void
 591          * @throws Tx_Extbase_Persistence_Storage_Exception_SqlError
 592          */
 593         protected function checkSqlErrors() {
 594                 $error = $this->databaseHandle->sql_error();
 595                 if ($error !== '') {
 596                         throw new Tx_Extbase_Persistence_Storage_Exception_SqlError($error, 1247602160);
 597                 }
 598         }
 599
 600         /**
 601          * Clear the TYPO3 page cache for the given record.
 602          * Much of this functionality is taken from t3lib_tcemain::clear_cache() which unfortunately only works with logged-in BE user.
 603          *
 604          * @param $tableName Table name of the record
 605          * @param $uid UID of the record
 606          * @return void
 607          */
 608         protected function clearPageCache($tableName, $uid) {
 609                 if ($this->automaticCacheClearing !== TRUE) return;
 610
 611                 $pageCache = $GLOBALS['typo3CacheManager']->getCache('cache_pages');
 612                 $pageSectionCache = $GLOBALS['typo3CacheManager']->getCache('cache_pagesection');
 613
 614                 $result = $GLOBALS['TYPO3_DB']->exec_SELECTquery('pid', $tableName, 'uid='.intval($uid));
 615
 616                 $pageIdsToClear = array();
 617                 if ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($result))      {
 618                         $storagePage = $row['pid'];
 619                         $pageIdsToClear[] = $storagePage;
 620                 }
 621                 if (!$storagePage) {
 622                         return;
 623                 }
 624
 625                 $pageTSConfig = t3lib_BEfunc::getPagesTSconfig($storagePage);
 626                 if (isset($pageTSConfig['TCEMAIN.']['clearCacheCmd']))  {
 627                         $clearCacheCommands = t3lib_div::trimExplode(',',strtolower($pageTSConfig['TCEMAIN.']['clearCacheCmd']),1);
 628                         $clearCacheCommands = array_unique($clearCacheCommands);
 629                         foreach ($clearCacheCommands as $clearCacheCommand)     {
 630                                 if (t3lib_div::testInt($clearCacheCommand))     {
 631                                         $pageIdsToClear[] = $clearCacheCommand;
 632                                 }
 633                         }
 634                 }
 635
 636                 foreach ($pageIdsToClear as $pageIdToClear) {
 637                         $pageCache->flushByTag('pageId_' . $pageIdToClear);
 638                         $pageSectionCache->flushByTag('pageId_' . $pageIdToClear);
 639                 }
 640         }
 641 }
 642
 643 ?>